Key and keyhole lock



Dec. 28, 1926. 1,612,778

- Y M. MEEPOS KEY AND KEYHOLE LOCK Filed Feb. 23, 1926 6 lltllll 7 7?Z I9 I30 /8 /6 AT 'jlfmz'fleepa awuewtdz Patented Dec. 28, 1926.

STTS

MAX MEEPOS, OF LOS ANGELES, CALIFORNIA.

KEY AND KEYHOLE LOCK.

Application filed. February 23, 1926. Serial No. 90,190.

The present invention has reference to keys and key-hole locks, and aims to provide novel means for preventing the operation of the usual key-controlled tumbler lock, by unauthorized persons.

The primary object of the invention is to provide means whereby a key positioned within a key-hole and turned to a predetermined position, may be locked in such position and may only be released by persons familiar with the combination.

Another important object of the invention is to secure the device in position by securing screws which are invisible.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawing:

Figure 1 is an elevational View of a keyhole guard constructed in accordance with the invention.

Figure 2 is an enlarged vertical sectional view through the keyhole guard.

Figure 3 is a sectional View taken on line 33 of Figure 2.

Figure 4 is an elevational view of the operating ring.

Figure 5 is a plan view of the base.

Figure 6 is a sectional view taken on line 6-6 of Figure 2.

Referring to the drawing in detail, the base of the device is indicated by the reference character 5 and is preferably disk-like in formation, the same being provided with a cut out portion defining a circular shoulder 6 adapted to provide a rest for the usual flange 7 of the lock barrel 8 of the usual tumbler lock.

The barrel 8 is supplied with the usual key opening 9. in which the key employed for actuating the tumblers of the lock is positioned, it being understood that in this form of lock, the key barrel which is indicated at 10 and in which the keyhole is formed rotates, and the key may only be removed when the keyhole is in a position as shown by Figure 5.

Positioned directly over the barrel is a rotary tumbler supporting member 11 which is formed with an elongated opening 12 adapted to be disposed directly over the keyhole 9, to permit the key to be positionedin the opening 9.

Formed in the periphery of the member 11 and arranged in spaced relation with each other, are a plurality of openings in which the substantially short tumblers 13 are positloned, the tumblers 13 being normally forced outwardly by means of the coiled springs 14.

Formed in the upper surface of the member 11 is a recess adapted to accommodate the inwardly extended flange 15 of the tumbler ring 16, which tumbler ring is formed with a plurality of openings for the reception of the substantially long tumblers 17, the distances between the tumblers 17 being twice as great as the distance between the tumblers 18 to the end that when certain tumblers of the member 11 are engagmg within the openings, in which the tumblers 17 are positioned, certain other tumblers 13 are held within their openings by contact with the inner surface of the ring 16.

This ring 16 is stationary and as shown by Figure 6, is secured to the base 5 by means of the screws 18 that pass upwardly through the base and enter threaded openings formed in the under surface of the member 16.

Forming a part of the member 16 is an outwardly extended flange 19 adapted to overlie the upper edge of the ring 20, there being provided a circular rib 21 formed on the lower edge of the ring 20 and adapted to fit within the groove 22 formed in the upper surface of the base .5.

As illustrated by Figure 4, the ring 20 is formed with rectangular slots 23 which have one of their respective walls cut away as shown at 24 for the reception of the .shanks 25 of the setting buttons 26 which buttons are formed with finger pieces at their outer portions and tumbler engaging cams 27 at the inner ends of the shanks 25, the shanks 25 being smaller than the cut out portions to permit the buttons to be moved or slid within the cut out portions to adjust them for controlling the movements of the tumblers.

As shown by Figure 2, the member 11 is locked by the tumblers and a key inserted in the keyhole 9 may not be turned to operate the lock, and may only be turned after the ring 20 and its buttons have been properly manipulated.

In order that the buttons and ring may be properly manipulated indicating characters are provided on the surface of the base 5, as well as on the buttons 26 to the end that a person may readily determine which buttons should be moved, and how far the ring member 20 should be moved, that providing, the person operating the lock familiar with the combination.

In the operation of the device, the person knowing the combination will move the ring member 20 to the proper position, and the buttons 26 will be operated so that the cams thereof, will move the pins 17 to cause the inner ends thereof to align with the inner surface of the ring member 16, causing the pins 13 to be forced within their openings and to positions to permit the movement of the member 11, whereupon a key inserted within the elongated opening 12 and within the keyhole 9 may be rotated to manipulate the locked tumblers not shown, to unlock the closure equipped with the look.

I claim:

1. In combination with the tumbler barrel of a look, a base, a rotary member mounted on the base and having an opening adapted to register with the keyhole of the tumbler barrel, said rotary member having a plurality of openings formed in the periphery thereof, tumblers within the openings, a stationary member in which the rotary member moves, said stationary member having openings adapted to align with the openings of the rotary member, tumblers in the stationar member, and means for operating the tumblers to permit movement of the rotary member Within the stationary member.

2. In combination with the tumbler barrel of a lock, a base held in position by the tumbler barrel, a rotary, member having an elongated opening adapted to register with the keyhole of the tumbler barrel, tumblers for normally preventing rotary movement of the rotary member, and means for operating the tumblers to move the tumblers to their inactive positions, and release the rotary member.

.3. In combination with the tumbler barrel of a lock, a base, a rotary member positioned over the tumbler barrel, a tumbler ring secured to the base, said tumbler ring having a flange overlying the rotary member to hold the rotary member in position, tumblers extending through the tumbler ring and adapted to move into the rotary member, said tumblers adapted to normally hold the rotary member against movement, and an operating ring for moving the tumblers to their inactive positions.

4. In combination with the tumbler barrel of a look, a base secured adjacent to the tumbler barrel, a rotary tumbler carrying member having an opening adapted to align with.

the opening of the tumbler barrel, a stationary ring surrounding the rotary member, tumblers carried by the stationary ring, tumblers carried by the rotary member, the tum blers of the ring-adapted to move the tumblers of the rotary member to their inactive positions, and means for moving the tumblers of the ring.

5. In combination with the tumbler barrel of a lock, a rotary tumbler carrying member having an elongated opening adapted to register with the keyhole of'the lock, a base adapted to be secured to the tumblerbarrel, a tumbler ring secured to the base, and surrounding the rotary member, said tumbler ring having tumblers and having openings, the tumblers of the rotary member adapted to extend into the openings to lock the rotary member to the tumbler ring, and anoper at-ing ring surrounding the tumbler'ring-to move the tumblers to their inactive positions and permit rotary movement of'the rotary member.

6. In combination with the tumbler barrel of a look, a base secured to the tumbler barrel, a rotary member mounted on the tumbler barrel and having an opening adapted to align with the keyhole of the tumbler barrel, a tumbler ring secured to the base, said rotary member carrying tumblers, said tumblers adapted to engage the tumbler ring to locl: the rotary memberto the tumbler ring, an operating ring adapted to be rotated around the tumbler ring, and means carried by the operating ring for moving the tumblers to their inactive positions.

7. In combination with the tumbler barrel of a lock, a base secure to the tumbler barrel, a rotary member mounted on the tumbler barrel and having an opening adapted to register with the key-hole of' the tumbler barrel, tumblers carried by the rotary member, a tumbler ring mounted on the base and having openings, tumblers in the openings and adapted to engage tumblers of the rotary member, the tumblers of the rotary member adapted to extend into openings of the tumbler ring, the last mentioned tumblers adapted to engage the tumblers of the rotary member to move them to their inactive positions, and an operating ring-for moving the tumblers.

8. A keyhole guard including a movable member, a base secured adjacent to the keyhole and on which the movable member'opcrates, a. tumbler ring secured to the base and having an outwardly extended upper flange, tumblers carried by the tumbler ring, said movable member having openings to accommodate the tumblers, an operating ring mounted on the base and disposedunder the flange, and adjustable cams carried'by the operating ring for engaging thetumblers, and said cams adapted to move the tumblers to their inactive positions when the ring is rotated.

9. A keyhole guard including a movable member having an opening adapted to register with the keyhole of the lock associated with the movable member, a base secured adjacent to the keyhole and on which the movable member moves, a stationary tumbler supporting ring surrounding the movable member, said base having a groove formed therein, an operating ring, a circular rib on the operating ring and adapted to move in the groove to lock the ring to the base, tumblers carried by the tumbler ring and adapted to engage Within openings of the movable member to look the movable member against movement, and means carried by the operating ring for engaging the tumblers to lock the tumblers in their inactive positions.

In testimony that I claim the foregoing as my own, I have hereto afiixed. my signature.

MAX MEEPOS. 

